drivers: mmc: sdhci-brcmstb: bcm2712 supports HS400es and clock gating

Enhanced Strobe and clock gating are set in the SDHCI_VENDOR register,
so make the driver aware it needs to do this for this controller.

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>

drivers/mmc/host/sdhci-brcmstb.c

@@ -400,6 +400,8 @@ static const struct brcmstb_match_priv match_priv_7216 = {
 };
 
 static const struct brcmstb_match_priv match_priv_2712 = {
+	.flags = BRCMSTB_MATCH_FLAGS_HAS_CLOCK_GATE,
+	.hs400es = sdhci_brcmstb_hs400es,
 	.cfginit = sdhci_brcmstb_cfginit_2712,
 	.ops = &sdhci_brcmstb_ops_2712,
 };